$OpenBSD: patch-Modules_pyexpat_c,v 1.2 2016/07/03 20:10:33 rpointel Exp $
--- Modules/pyexpat.c.orig	Sat Jun 25 23:52:32 2016
+++ Modules/pyexpat.c	Fri Jul  1 10:46:42 2016
@@ -267,6 +267,11 @@ call_character_handler(xmlparseobject *self, const XML
                                     noop_character_data_handler);
         return -1;
     }
+    if (!have_handler(self, CharacterData)) {
+        Py_DECREF(args);
+        flag_error(self);
+        return -1;
+    }
     PyTuple_SET_ITEM(args, 0, temp);
     /* temp is now a borrowed reference; consider it unused. */
     self->in_callback = 1;
